Liquid vaporizing device



June 28, 1938. Y c. T. AsBURY 2,122,333

Lv-IQUD VAPRIZING DEVICE Filed April 2, 1956 `2 Sheets-sheet 1 l Y June28, 1938. C-T ASBURY 2,122,333

LIQUID VAPORIZING DEVICE Filed April 2, 1936 2 Sheets-Sheel. 2

Patented June` 28, 1938 Charles T. Asbury, Elkins Park, Pa ApplicationApril 2, 1936, Serial No. 72,438 v claiml.

This invention relates to new and useful improvements in liquidatomizing devices.

The principal object oi the present invention is to provide a device ofthe character set forth constructed and arranged toproduce maximumatomlzatlon of a liquid.

Another object of the invention is to providev a device of the statedcharacter the parts of which may be readily and easily installed andremoved for purposes of cleaning and repair.

A further obiectof the invention is to provide a 'device oi' the typedescribed which is relatively small and compact and of simpIiied,inexpensive construction. 'I'heseand other objects of the invention andthe features and details of construction 'thereof are set forthhereinafter and shown in the accompanying drawings, in which:

Fig. l.` is a view in elevation showing the invention in associationwith the hearth of a liquid Afuel burner.

Fig. 2 is an enlarged view in section vertically through the rotarydistributing head.

Fig. 3 is a yfragmentary view in perspective of a portion of theperiphery of the distributor head.

Fig. 4 is a view in section on line 4l, F18. 2. Fig. 5 is a View insection on line 5-5, Fig. 2'. 6 is a i ientary view in perspectiveshowing a med form of one feature of the invention.

Fig. 'i is a view in. elevation partially in section showing anotherform of the invention and Fig. die a view in perspective of an atomizingdisk 'or member embodying the present invenwhich extend a plurality ofupwardly projecting radially disposed ribs or vanes 5 pressed, stampedor otherwise formed in said member 3 at predetermined substantiallyequally spaced interv 5o vals circumferentielly thereof. The radial ribsor vanas t gradually increase in height and width outwardlyfrom thechannel 5 of the member 8, and are otherwise constructed and ar-` rangedso that the side lor wall thereof which 56 faces in the direction ofrotationof the atomizer I. is substantially vertical as indicated atFig. 'I of the drawings.

In addition tothe foregoing, the intermediate plate or disk-like member3 is -provided with a 'lin radially projecting substantially horizontalilange 5 or the like 8 which is offset downwardly below the plane of theradial extremities of the vanes 5. A plurality of relatively narrow legsor like elements 9 project vertically upward from the periphery of theange 8 of the member 3 at A1o equally spaced intervals circumferentiallythereof in approximate alignment with the upstanding vanas 6 of saidmember and have their upper end portions bent or turned outwardly atright angles lto said elements and tol form a plurality l5 of supportingsurfaces In, the purpose for which will be described more in detailhereinafter.

The upper member 2 of the atomizer head I previously mentioned isprovided with an annular depending beadI I, the diameter of which ispref- 20 erably slightly in excess of the diameter of the channel 5 inthe intermediate member I, and the adjacent portion I2 of said member 2preferably inclines at a slight angle outwardly to the side or wallportions I3 thereof' which diverge 25 downwardly and terminate at theirlower edge in a relatively narrow peripheral ange I4, the outercircumference of which is substantially equal to that of the outer endedges -of the supporting surfaces I0 of the legs 9 of the inter- 3omediate member 3. The top portion I2 of the upper member 2 of the head Iis inclined outwardly from the bead II at a slight angle with respect tothe horizontal so that when rotation of the distributor head I ceases,liquid remaining 35 on the inner surface thereof will flow inwardly andbe intercepted' by the bead I I which causes said liquid to drop backinto the lower member 3- and the oil channel 5 therein, and further forthe purpose of facilitating atomization of certain 40 liquids, -it maybe found desirable to provide the side'or wall portions I3 of the topmember 2 of the head i with a substantially roughened or uneven innerlsui-face in the manner shown in Fig. 6 of the drawings. 45

The upper and intermediate members 2 and 3 oi' the head I are preferablypermanently secured together by welding or other suitable means at theseveral points circumferentially of each of said members where theperipheral'ilange It 5o of said top member 2 rests upon the supportingsurface portions I0 of the vertical legs 9 of said intermediate member3, and a plurality of substantially radially extending angularlydisposed blades or vanes I5 are formed in any suitable 55 manner inthose portions of said peripheral ilange I4 of the top member 2 thatreside intermediate said vertical legs 9 of the intermediate member 3,

The previously mentioned lower disk like member 4 is of .annular formand the inner diameter thereof is preferably slightly in excess of thediameter of the channel 5 of the intermediate member 3 while its outerdiameter is somewhat less than the outer diameter of the flange 8 ofsaid intermediate member 3. Asshown the member 4 is substantiallyhorizontal and yprovided with a plurality of upstanding vertical legs orthe like. I6 located at substantially equally spaced intervalscircumferentially thereof, the upper end portions of said legs I6 beingbent or turned outwardly at right angles to the legs I6 to form toes orsurfaces I1r by means of which.

the lower member 4 is preferably permanently secured in any suitablemanner such as welding to the underside of the flange 8 of theintermediate member 3 and made a component part of the head I. Inaddition to the foregoing the lower member 4 is provided with aplurality of angularly' disposed upstanding vertical blades or vanes I8formed intermediate the inner and outer circumferential edges of saidmember by stamping or pressing out portions thereof in the usual manner,although such blades or vanes I 3 may be independently provided andpermanently secured to the upper surface of the member 4 if desired. v

In the present instance the lower disk member 4 has been shown anddescribed as being permanently secured to the under side of the ange 8of the intermediate diskmember 3. However, in installations of largersize it may beldesirable to secure said disk member 4 to the under side`lin said member 3 as of the disk member 3'in such manner that theformer may be readily removed and re-attached to the under side of thedisk 3 in inverted position with the vanes I8 thereof extendingdownwardly from the under side. in-which position said blades or vaneshave been found to 'provide a greater quantity of air for discharge intocontact with the fully latomized liquid.

A boss or the like Isis secured centrally at the under side of the topmember 2 of the head I. and provided with a tapered bore 28 arranged toreceive the similarly tapered upper end 2| of the shaft 22 of a motor orother source of rotative power (not shown), the upper end of said shaft22 being tapped as indicated at 23 to receive a screw or the like 24 forsecuring the distributor head I to the shaft 22 for rotation therewith.A supply pipe 23 extends vertlcally upward through the central openingsin the head members 3 and 4 and has lits upper end directed inwardly ofthe annular channel indicated by reference.

numeral 23. l

Under certain conditions of operation of a liquid fuel burner'having arotary `distributor head of the present ttype, it may be found de'sirable to mount one or more hoods orthe like 21 thereon for the purposeof protecting and insulating said memberA 2 from-the excessivetemperatures of .the surrounding combustion chamber and reducingcarbonization of the fuel and the formation of soot on the under sidethereof to a minimum, and ifdesired apertures may be provided inwardlyadjacent' the head 'I of the top-member -2 andthe periphery 4oi! suchhood members 21 as indicated at 23 and 23 respectively to provideopenings for the circulation of air within thespace therebetween. It

also be advisable under various operating condi-- tions to provide finsor blades 21a at the under side of the hood 21 for the purpose ofaugmenting the circulation of air between the latter and the upper headmember 2 by drawing air inwardly oi' the openings 28 and discharging the'same outwardly through the openings 29 therein.l

' ing a groove or channel 34 in the upper face thereof circumvents saidhearth 30 inwardly adjacent the previously mentioned refractorystructure 32, said groove being arranged to receive a coil of wire 35 orother relatively open heatl impervious structure such as screening orthe like, the convolutions or strands of which are relatively spaced forthe purpose of further distributing and breaking down the vaporized fueland greatly decreasing the time required for vthe ignition of said fuelas it is discharged from the head Ir To operate. the device. thedistributor head I comprising the members 2, 31 and 4-is rotatablydriver by the shaft v22 in a counter-clockwise direction with respect tothe drawings hereof and liquid deposited in the channel 5 of the member3 from the pipe 28 is forced radially outward over the upper surface ofsaid member 8 between the upstanding ribs or vanes 8 thereof, thecentrifugal force created by rotation of the head I causing the greaterportion of said liquid to im pinge'against, the substantially verticalforward y or leading face 1 of the ribs or vanes 8 and be partiallyatomized and-vaporized during its-outward movement. said partialvaporization being effected by contact of the liquid with air whichduring operation of the distributor head aspirates upwardly through theopening surrounded by the channel l of the intermediate disk 3 andoutwardly over the latter intermediate the up# standing vanes 3 thereon.When the partially atomized and vaporized liquid reaches the radialextremities of the ribs orvanes 8 it is discharged or flung against theinner surface of =the out- .wardly spaced side or wall portions I3 ofthe upper member 2 with sufficient impact to effect substantiallycomplete atomization and vaporisation of said liquid which is aided orenhanced by reason of the differential between the respective peripheralvelocities of the radial extremi# ties of the vanes 8 of theintermediate member 3 and the outwardly spaced inner surface of the sideor wall portions I3 of the'top member 2.

During continued rotation of the head I the blades or vanes I3 of thelower member 4 ofthe head I and further discharged at a substantialvelocity radially. outward through the smaller relatively closely spacedblades or vanes Il which function to-increase still further theatomization and vaporization of the liquid which is then dischargedoutwardly from the' head I and uni- 8,182,888 formly distributedthroughout the combustion chamber of the burner in the form of a finemist or Afog which,` prior to ignition, falls upon the relativelyopencoil or screening Il located at'theV periphery of the hearthstructure where it is quickly ignited and the flame rapidly distributeduniformly around said hearth causing the liquid -thereafter dischargedfrom the head I to burn more or less in suspension 4above the hearth,whereby carbonization and the formation of soot within the burnerchamber and distributor head i is substantially eliminated. In additionto the foregoing, the relatively open coil or screening I5 functions`tofretaln the hot gases of combustion adjacent the peripherall areaofthe combustion chamber so that ,said gases may pass olf upwardly alongthe side wall area of said chamber whereby a more uniform distributionof the products of combustion tlnoughout the chamber is effected and theefiiciency lof the burner materially in- "provided with radiallydisposed ribs or vanes .a

pressed, stamped or otherwise formed in said member 3a at substantiallypredetermined equally spaced intervals circumferentially thereof, saidradial ribs or vanes ia being of gradually increasing height andwidthloutwardly of the member 3a and otherwise constructed and arrangedso thatthe side or wall thereof which faces in the direction of rotationof said member is substantially vertical as indicated atla in Fig.

8 of the drawings.

In addition to the foregoing, the plate or disk member 3a is providedwith a peripheral flange '36 which extends parallel to the axis of saidmember to a point beyond the ends of the radial ribs or vanes .6a inVoutwardly spaced relation with respect to the radial extremitieslthereof, and has its inner surface corrugated or ribbed as at 31. Aplate or like guard member Il may be secured in any suitable manner suchas by welding to the outer end portions of each of the radiallyextending ribs or vanes 6a to overlie the latter and eliminate as far aspossible the formation of soot or carbon on the surfaces of said ribsBaas a result ofthe intense heat of combustion when said atomizingdevice is employed in liquid fuel burners and the like.

VIn the present instance, the plate or disk member 3a is provided with acentral bore or opening 20a to receive` the end of a shaft 22a of amotor or other'source of rotative power M, said member la being iixedlysecured on said shaft 22a for rotation therewith. As shown, the shaft22a `oi' the motor M is provided -with an axial bore 3l connecting atone end with a transverse bore 40 l which opens on to the centralportion of the `theshaftf22u of the motor M and is located intermediatethe latter and the plate or disk member 75 3a. A casing, housing or likestructure designated generally as 4I substantially encloses the fan 4|and is provided with a ilange 44 which extends p; allel to the shaft 22aand the flange of disk la in outwardly spaced relation with respect tosaid flange to a point substantially in register with the outerperipheral edge of the latter. A partition member 4i sub-divides saidhousing or casing 43 into an air chamber 46, having a plurality ofcircumferentially spaced-fair inlet openings 'l'thereto, and a fanchamber 4B, said partition member 45 having an opening 49 centrally`therein for the ingress of air to the fan 42 from said air chamber 4l.

In operation of the device, the fan 42 and the plate or disk atomizer 3aare rotatably driven by the shaft 22a and motor M and liquid fed throughthe bore 39 of said shaft from pipe 4| discharges through the transversebore 40 on to the ribbed or vaned face or surface of said member 3a andis forced radially outward over the upper surface thereof between theupstanding ribs or vanes 6a..l

the centrifugal force caused by rotation of said member .causing thegreater portion of said liquid to impinge against the substantiallyvertical forward or leading face 1a of said ribs or vanes where it ispartially atomized during such radially outward movement. When thepartially atomized liquid reaches the radial extremities of the ribs orvanes 6a it is discharged or flung '3a' with sufficient `impact toeffect substantially complete atomization of said liquid due to thediil'erentialexisting between the respective peripheral velocities ofthe radial extremities of the vanes 6a and the inner surface of theoutwardly spaced ilangeli as well as said corrugated or ribbed innersurface formation of the latter.

-During continued rotation ofthe member la the atomizedliquid passesalong the inner cor-v rugated or ribbed surface of the ange 38 to theouter peripheral edge thereof from which it is discharged `into contactwith the blast of air from the fan or the like 42 emerging through thespace between said flange 38 of said member 3a and the flange portion 44of the housing or casing 43. As an alternate construction of the presentform of the invention, the flange 36 which ex- -tends parallel to theaxis of rotation of the disk la may be entirely eliminated and theliquid Vdischarged from the extremities of the radial ribs 6a bycentrifugal force allowed to impact directly against the inner surfaceof the outer portion of the flange 44 of the stationary fan casing 43,where it is thoroughly atomized and immediately vaporized by the blastof air discharging outwardly'between said flange 5B and the periphery ofthe disk 3a. from the fan 62.

Although' the description of the present invenl `tion has been set forthmore particularly with shall be precisely limited thereto but thatlchanges and vmodifications may be incorporated where within the scope ofthe annexed claims.

I claim; 1. In a device of the character described, a centrallyapertured rotatable disk imperforate between its inner and outerperipheries and having ribs on its imperforate portion disposed atcentrally apertured rotatable disk imperforate between its inner andouter peripheries and having ribs on its imperforate portion disposed atsubstantially equally spaced intervals lcircumferentially thereof,-means for feeding a liquid onto said disk, means for rotating the diskto cause the iiquid to vbe discharged outwardly thereor by centrifugalforce, impacting means rotatable with the disk arrangedin outwardlyspaced relation with respect to the ribs for atomizing the liquiddischarged therefrom, means operatively associated with said impactingmeans to still 4further atomize said liquid after the saine contacts theimpacting means, and means operable to direct air into contact with saidatomized liquid to thoroughly vaporize the same.

3, In a device of the character described, a centrally aperturedrotatable disk imperforate between its inner and outer peripheries andhaving ribs on its imperioratel portion disposed at substantiallyequally spaced intervals circumferentially thereof, means for feeding aliquid onto said disk, means for rotating the disk vto 4 cause theliquid to be discharged outwardly thereof by centrifugal force,impacting means rotatable with the disk arranged in outwardly spacedrelation with respect to the ribs for atomizing the liquid dischargedtherefrom, means operatively associated with said impacting means tostill further atomize said liquid after the same contacts the impactingmeans, a fan rotatable with the disk, and a casing having air inletopenings substantially enclosing said fan, said casingbeing constructedand arranged to direct air from said fan into contact -with the atcmizedliquid discharged from said impacting means to vaporize ,the same.

r 4;..In a device of the character described, a centrally aperturedrotatable disk imperforate between itsinner and outer peripheries andhav-- ingribs V on its imperforate portion disposed at substantiallyequally spaced intervals circumferentlslly thereof, means fc-r feeding aliquid onto said disk, meansfor rotating the -disk to cause the liquidto be discharged voutwardly thereof 'ey centrifugal force, impactingmeans rctatable with the disk arranged in outwardly spaced relation withrespect to the ribs for atomizing the lliquid discharged therefrom,means operatively associated with said impacting means to still furtheratomize said liquid after the same contects the impacting means, meansoperable to .direct into contact with said atomized liquid to thoroughlyvaporize the same, a fan rotatablewlth the disk, and acasing having lairinlet openings substantially enclosing said fan, said casing having aportion surrounding` said impacting :means in spaced .relation with-vrespect thereto sir from said ian'is directed into conwith the atomisedliquid dischred from thoroughly vaporise the 5. In a device'ofA thecharacter described, a

liquid fuel distributor including a centrally apertured disk having aliquid receiving channel outwardly adjacent said aperture and upstandingvanes extending raally outward from said channel at predetermined spacedintervals circumferentially of said disk, means for feeding a liquid Yinto the channel, means for rotating the disk to cause said liquid tocollect adjacent one face of the vanes by centrifugal force, a secondvdisk having a portion arranged in outwardiy spaced relation with respectto the varies of the rst disk and in the path of discharge of the liquidtherefrom so that said iiquid will impact against said portion andatomige, means projecting outwardly from the impacting portion of saidsecond disk operable te still further atomize the liquid after the samecontacts said impmting portion, and a thdrd disk rotatable with said rstand second disk, said third disk having means constructed and arranged.to direct an air current into contact with-said atomized fuel tovaporize and discharge the same outwardly of the distributorsubstantially in the form of a fog. l

6. In a device of the character described, a centrallyv apertured diskimperforate between its inner and outer peripheries and havingsubstantially radial ribs on its imperforate portion at equally spacedintervals lcircumferentially thereof, means for feeding a liquid ontothe ribbed surface of the disk, mear-ts for rotating said disk to causethe liquid to move outwardly thereof between the ribs and be dischargedfrom the disk by centrifugal' force, a flange on said disk extending inoutwardly spaced relation with respect to the extremities of said ribsand arranged for engagement by the liquid discharged from the disk withs ulcient impact to thoroughly atomize the same priorto discharge fromsaid flange, a fan rotatable with said disk, and a; casing having innerand outer peripheries and having substan' tially radial ribs on itsimperforate portion at equally spaced intervals circumferentiallythereof, said ribs being of gradually increasing height *and4` widthoutwardly of said disk, means for feeding a liquid onto the ribbedsurface of the disk, means for rotating said disk to cause the liquidtomove outwardly thereof `between the ribs and be discharged from thedisk by centrifugal force, a flange on said disk extending in outwardlyspaced relation with respect to the extremities of said ribs. andarranged for engagement by the liquid discharged from the disk withsumcient impact to thoroughly atomize the same prior to discharge fromsaid flange, a fan rotateble with said disk, and a'casing having airinlet i openings thereto substantially enclosing said fan,4

said casing having an open ended flange portion surrounding the ilrstmentioned flange in spaced relation with respect toftlie latterwherebyair.r

from the' fan is directed into contact with the atomized liquiddischarged from said i'irst flange to thoroughly vaporize the saidliquid.

8. a device of the character described, a i centmlly apertured disk ofsubstantially frustoconical form imperforate between its inner and'louter peripheries and having substantially radial ribs onits'imperiorate 'portion at equally spaced intervals circumferentially'thereof, said ribs be ing o! gradually increasing height and widthoutwardly .of said disk, means for feeding a liquid onto the ribbedsurface ot tlie disk, means for rotating said disk to cause the liquidto move outwardly thereof between the ribs and be discharged from thedisk by centrifugal vforce, a

flange on said disk extending in outwardly spaced relation with respectto the extremities of said ribs and arranged for engagement by theliquid l spect to the latter whereby air from the .tan is directedl intocontact with the atomized liquid discharged from said ilrst ilange tothoroughly l0 vaporize the said liquid.

v CHARLES T. ASBURY.

